Home / 371,486,691.86-512,621,162.65-218,698,957.13

Finding the Fourth Proportional to 371,486,691.86, 512,621,162.65 and 218,698,957.13

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Solution

The fourth proportional to 371,486,691.86, 512,621,162.65 and 218,698,957.13 is: 301,786,621.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,486,691.86 : 512,621,162.65 = 218,698,957.13 : x
  2. Step 2: Convert to fraction form
    371,486,691.86/512,621,162.65 = 218,698,957.13/x
  3. Step 3: Cross multiply
    371,486,691.86x = 512,621,162.65 × 218,698,957.13
  4. Step 4: Simplify right side
    371,486,691.86x = 112,109,713,675,057,904
  5. Step 5: Solve for x
    x = 112,109,713,675,057,904/371,486,691.86
  6. Step 6: Final answer
    x = 301,786,621.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.